Add todo comments around workarounds

Author: XuehaiPan

Lib/sysconfig/__init__.py

@@ -334,6 +334,8 @@ def get_makefile_filename():
     if _PYTHON_BUILD:
         return os.path.join(_PROJECT_BASE, "Makefile")
 
+    # XXX: Remove this in Python 3.16
+    # This flag will always be True since Python 3.16
     with warnings.catch_warnings():
         # ignore DeprecationWarning on sys.abiflags change on Windows
         warnings.simplefilter('ignore', DeprecationWarning)
@@ -512,6 +514,8 @@ def _init_config_vars():
     base_prefix = _BASE_PREFIX
     base_exec_prefix = _BASE_EXEC_PREFIX
 
+    # XXX: Remove this context manager in Python 3.16
+    # sys.abiflags will always be available on all platforms since Python 3.16
     with warnings.catch_warnings():
         # ignore DeprecationWarning on sys.abiflags change on Windows
         warnings.simplefilter('ignore', DeprecationWarning)

Lib/test/pythoninfo.py

@@ -48,6 +48,7 @@ def get_infos(self):
 def copy_attributes(info_add, obj, name_fmt, attributes, *, formatter=None):
     for attr in attributes:
         if attr == 'abiflags':
+            # XXX: Remove this special case handling in Python 3.16
             with warnings.catch_warnings():
                 # ignore DeprecationWarning on sys.abiflags change on Windows
                 warnings.simplefilter("ignore", DeprecationWarning)

Lib/test/support/__init__.py

@@ -877,6 +877,8 @@ def check_bolt_optimized():
     return '--enable-bolt' in config_args
 
 
+# XXX: Remove this in Python 3.16
+# This flag will always be True since Python 3.16
 with warnings.catch_warnings():
     # ignore DeprecationWarning on sys.abiflags change on Windows
     warnings.simplefilter('ignore', DeprecationWarning)